Insole.



S. HARA.

INSOLE. APPLscATloN man MAR.13.19\6.

Patented. Dec. 26, 1916.

INVENTOR enteren srn'rns neo nena, or ons...

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To all whom concern/J Be itlnovf'n vthat ll, Sn'INoo HARA, a suhject ofthe Emperor ot' Japan, residing at Oakland, inthe county of Alameda',and

State of. California, have invented new and useful Improvements 1n'ln'soles, of which' causes of muscular rlieuniatism, soreness andlani'eness ofthe feet are directly attributable to the fact that theshoes Worn exert a pressure at points on the 'feet which by nature arenot intended to support any part of the Weight. Anatomically the foot isshaped to and sci-called natural shaped insoles is to inthree pointsnamed and none other.

crease the supporting area ofthe soles of the feet, thereby violatingthe 'laws of nature.

ln my improved insole l have so shaped the parts as to provide forsupporting engagement with the sole of the foot at tie Y leaving thematerial thick at those points and attenuating or thinning it at otherpoints I obtain the object sought.

My invention is exemplified in ing description and illustrated in thepanying drawings, in which v Figure 1 is a'plan vieu7 of the' undersidethe" followaccomot the insole. Fig. 2 is an elevation of the outsideedge. Fig. 3 is an elevation of the inside edge. yFig. 4 is a crosssection on line Ill-l of Fig, 1. Fig. 5 is a cross' section on line 5-5of Fig. l. Fig. 6 is a vieWo a inocliiication.-

The insole shown is of an outline correspending to the lowermost portionof the sole'and is made of .any `'suitable material. The-hall and heelof the insole are made thicker than the other portions; the heel heingthickest at the -cent1-,l portion'lO While the edges 11 of the stimefare preferably made thin in accordancenith my plan of relieving allstrains frein tl1e' fleshy ,portihns of the foot and confining thesupporting' "areafgof- .the insolelto the principal bones oil the footwhich, in the case of the heel, 'are Y centrally located. vThe hall ofthe footfbeingg Speccstion of Letters' Esteri. 15,45, E@ jlgjhig, 4'spinnen@ nea Mami; is, nus. ser'iaino.

which esteinl below the others, the thickened portion of my insole iscorrespondingly shaped, being longer beneath the iifth nietatarsal bone.indicated'at l2, and shorter heneath the first inetatarsal honeindicated at 13, and slightlyv thinned c'cntrall)7 st le in the shape ofa forwardly directed V.'

The central portion oft the insole is gradually tapered toward the heel,at the. outer sido l5., and the inner side lo, beneath the arch of the"foot, is abruptly thinned or eut 4 away entirely, inasmuch as the archof the foot is not intended to support any Weight.

`'lllie oe portion l? of the insole is attenuated or thinned more orless abruptly, thus relieving the strains from the overlying portions ofthe-foot.

ln shaping my insole l prefer to cui the materiali at the underside, sothat no inequalities or ridges may come in direct contact Ywith thefoot. By having the arched portion of the insole thin or cut away thepressure on the cuneifiorin bones is relieved and cause of much paineliminated. l find the arch supports now in use put an unnatural s "ainon the structurally 'weal part of the loot and, in. addition, cut olthe'free circulation of the blood. By thinning the toe ortion oit theinsole, the ed ci? the heely and the other parts et the insole beneaththe 8 tion' 'with sandals Where tie strips are Worn 10Gl bctweenthetoes. f

'lhe'three points 1), l2 and 13, ontlie in- 'sole, are the only ones tohave supporting en'ejegenient with the foot and thus, in effect,

a tripod support is iorined 'which corre- 105 spends substantially withthe structure of the foot. Elsewhere the strains are relieved and thewearer enjoys the comfort end iree dom of ha reliootedness.

.Having thus descrihediny invention wgat 11o tizilly coinciding with theball portion of 2. An insole having normally e flat upper surface thethickness ofthe sole increasing gradually from the` toe end of -the soletoward its ball portion and increasing abruptly at this portion to itsmaximum.

3. An insole having a heel portion andspaced Aportions on the oppositesides ofthe bull of like thickness, and the remaining portions oftheinsole of lesser thickness and disposed normally and entirely in aflat plane with the uppersurface of the heel and ball portions wherebythe remaining portions will be free to yield,

4. An insole having an uninterrupted flat upper surface and the undersurface abruptly reduced at the forward end beneath the toes to form a,toe support, the under surface being further attenuated to provide thegreatest thicknesses of the insole at the center of the heel and in@forwardly directed V immediately behind the abruptly reduced forwardend, the heel and bell being connected by a narrow strip.

In testimony whereof I have hereunto set .my hand in the presence of twosubscribing witnesses.

SHINGO HARA. Witnesses:

W.,VV. HEALEY, "L. S. TODA.

